LOWLANDER MK4 MANURE SPREADER – INSTRUCTION & SPARES MANUAL
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90
6.4.3.5 ADJUSTING THE WHEEL BEARINGS
Lift the axle until the wheel is no longer resting on the ground.
Large wheels should be removed so that the play is easier to feel and to make it easier to adjust the bearings.
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Remove the hubcap.
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Remove the cotter pin or hair-pin clip from the spindle.
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Tighten the castle nut (right-hand thread) to take up the internal play (the conical roller bearings should then be firmly held
between the hub seatings, the pressure ring, the spindle and castle nut).
The rotation of the hub or wheel feels to be slightly stiff.
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Slacken the castle nut until there is no longer any friction between the castle nut and the outer bearing and the hole for the pin
is aligned with a notch in the castle nut.
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Tap the hub gently using a mallet to shake down the assembly.
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Check that the hub rotates more freely.
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Always err on the side of too free rather than too tight.
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When the hub has been adjusted, fit a new split cotter pin or re-fit the hair-pin clip.
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Refit the hubcap.
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Refit the wheel following the instructions in Sections 6.4.3.1 (FITTING WHEELS) and 6.4.3.2 (TIGHTENING AND RETIGHTENING
WHEEL NUTS).
When the wheel has been refitted, turn it slightly. It should come to rest with a slow rocking movement due to the imbalance.
6.4.3.6 LUBRICATING THE WHEEL BEARINGS
In normal operating conditions, lubricate the bearings every 2 years or every 50,000 km and when the brake shoes are replaced.
In harsh conditions the bearings should be lubricated more frequently.
Use a general-purpose EP grease formulated for lubricating plain, ball and roller bearings, subject to heavy loads and impacts
typical of HGV, agricultural vehicle hubs, etc.
All parts (hub, spindle, bearings, seals, castle nuts, hubcap, and cotter pin) should be degreased and perfectly clean before
reassembly.
The work should be carried out in a clean environment with appropriate tools as the slightest bit of dirt can damage the bearings or
even the spindle.
When carrying out maintenance on the bearings, check the brake linings, drum and return springs, clean the brakes, clean and
lubricate the brake cam shaft.
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